A halin yanzu, akwai nau'ikan masu juyawa na DC/DC da yawa akan kasuwa, mai canzawa shine nau'in juzu'i na DC/DC, ta hanyar sarrafa mitar sauyawa don cimma madaurin wutar lantarki akai-akai.Ana amfani da masu jujjuyawar ƙararrawa a cikin aikace-aikacen wutar lantarki mai ƙarfi don santsin raƙuman raƙuman ruwa, inganta yanayin wutar lantarki, da rage asarar sauyawar da ke haifar da manyan musanyawar wutar lantarki kamar MOSFETs da IGBTs.Yana da mahimmanci a lura cewa ana amfani da da'irar LLC a cikin masu canzawa saboda yana ba da damar sauya wutar lantarki (ZVS) da sifili na yanzu (ZCS) a cikin kewayon aiki, yana goyan bayan mitoci mafi girma, yana rage sawun abubuwan da aka gyara, kuma yana rage tasirin lantarki. tsoma baki (EMI).
Zane-zane na resonant mai juyawa
Ana gina mai jujjuyawa akan na'ura mai jujjuyawa wanda ke amfani da hanyar sadarwa na masu sauyawa don juyar da ƙarfin shigar da DC zuwa ma'aunin murabba'i, wanda sai a yi amfani da shi zuwa da'ira mai resonant.Kamar yadda aka nuna a hoto na 2, da'irar resonant ta ƙunshi resonant capacitor Cr, resonant inductor Lr da magnetizing inductor Lm na na'ura mai canzawa a jere.Da'irar LLC tana tace duk wani babban tsari na jituwa ta zaɓin ɗaukar matsakaicin ƙarfi a ƙayyadadden mitar raƙuman raƙuman murabba'i da sakin wutar lantarki ta sinusoidal ta hanyar maganadisu.Wannan siginar igiyar AC ana ƙarawa ko rage shi ta hanyar wuta, gyarawa, sannan tace don samar da wutar lantarki da aka canza ta DC.
Sauƙaƙe LLC mai jujjuyawar DC/DC
Tushen ma'anar murabba'i (RMS) na yanzu na capacitor yana ɗaya daga cikin mahimman sigogin da za a yi la'akari da su yayin zabar madaidaicin madauri mai ƙarfi Cr don mai sauya DC/DC.Yana rinjayar amincin capacitor, ƙarfin lantarki, da kuma gabaɗayan aikin mai canzawa (dangane da topology na da'irar resonant).Har ila yau, zafi yana shafar RMS na halin yanzu da sauran asarar ciki.
Polypropylene fim dielectric
PCB mai hawa
Ƙananan ESR, Ƙananan ESL
Babban mita
Lokacin aikawa: Satumba-15-2023